Waiting time for 189

I lodged my case in July 2015. HR got interview in Sept 2015. Then Physical inquiry in june 2016. Still there is no input from their end. I am not able to understand how much more time they will take. what is happening there ?
You have not added any case, we are not sure what exactly you refer to, what country, what visa... parents visa have an estimate wait of 30 years :(